digi01

Thank you arj Yes,I accept orders via net.But I do not have much free time, so the process is usually slow.

YGPM,huangyong this is another amp,standard A47 with AC supply. enjoys

sorry I am late,I had a class yesterday. I voted others.I have a home studio.my diy is since making some small electronic interface,from easy MIDI bridge to involved power amp and 6 tracks MIXer.

thank you. In fact,the case is very small and the amp's sound has over the OBH11

cool ideas I have Jukebox too.

thanks for your comments. Really,it is a problem.they be accessed from the rear,but you have to unscrewing the rear board to change batteries.in the rear board,including a power switch and a wallwart supply socket. the knob and sockets are not on the line in the same level.I reserve the space of 50mm,it can works fine. enjoys

我喜欢用电脑的散线，还有一种工业电缆（通常用在电梯控制电路里）非常容易焊接，而且有足够的强度。 比如这个：

thank you bram It can drive er4s or grado series headphone.the sound is graceful,a little darkness evil

led detail,

the red cap is WIMA MKP10,4.7uf BP. Circuit part place in under the socket. DETAIL,

thank you bpribadi solder,

inside

The circuit is common RA-1,there is not a novel one. The part of the power supply is using the JRC4556 rail splitter.and white LED.

wonderful! so many quality caps

heady,your layout is beautiful,full of logic I am looking forward to your finished amp.Have you find a sexy case for your amp? digi

a US diyer have finished it.url:http://www6.head-fi.org/forums/showthread.php?t=87661 FAQ: - Is this amp based on the ordinary EarMax or the EarMax Pro? Yes,it is besed on EarMax Pro. - What exactly did you mean when you said optimised? The optimized Morgan Jones amplifiers (with and without feedback) can output more than 3 times the current of the original into a 32-ohm load.These modifications resulted in better performance into both 300-ohm and 32-ohm loads. - Can it power both low & high impedance headphones? Sure:-)the amp can drive my HD495(32ohm) and AKG141M(600ohm) never so good. - Any other relevant information provided would be greatly appreciated (like cost etc). the amp cost around 120USD,based on parts. BTW,the design is based nearly 100% of the informations of headwize and diy workshop forums. My contribution is transfering it to protel project and making the pcb. digi

good.your amp is not humble at all. you have very imaginative ears and very imaginative layout ideas

BTW,jason, I am glad to help you make pcb,BEIJING pcb factory at cheap price wtih good quality.but you have use protel to draw.

recently,my office fiber net is very unsteadiness.I can see all pic,but a little slow. congratulations again,good work.bram

BTW,what power supply do you using for?

good work,dreamie have you try 4556 chip?

good,jason do you use plastic pcb stand-off holes?just like PC main board. cheers

WELL DONE!BRAM the ground channel is a 634 only?

thank you bram,and sorry for slow response. I am very busy during weekend,attend my cousin's wedding yes,you can remove the output caps under kind of risk.solid state buffer does not have output limit and protection. for led problems,you can use a couple of 1n4148 setting the solid stage bias.just like the C1 amp that i diy for afterbruner is in this way. yes,the psu is unregulated.

wow,good translation. thank you mackie,you are so conscientious and friendly